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Sagot :
There are 20.046 grams in 0.743 moles of Al.
Mole is the SI unit of measurement of the matter present inside any substance or element. It is denoted by the 'n'.
The formula of finding mole is
n = mass / molar mass
According to the question, to find the mass of Al the formula can be rewritten as mass = moles × molar mass.
Molar mass of Al = 26.98 g/mol.
Moles of Al = 0.743 moles
Therefore, mass of Al = 0.743 moles × 26.98 g/moles
Hence, mass = 20.046 grams
To know more about mole, here
brainly.com/question/15209553
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